Patent GB-191022945-A (GB)
Title: Improvements in Reversing Mechanism.
Inventor: HENRICI WILLIAM AUGUST EDWIN
IPC: F16H3/00
Filed: 1910-10-04
Granted: 1911-07-20
Abstract: 22,945. Henrici, W. A. E. Oct. 4. Reversing-gearing.-Relates to reversing-mechanism of the type in which driving and driven shafts 3, 6 are connected by reversing- gearing and are provided with clutches intermittently a c t u a t e d at suitable times by means under the control of automatic timing-mechanism, such as a continuously reciprocating device. The driven shaft may be provided with a worm 7 for driving the drum of a washing- machine. The driving-pulley 4 is mounted on a sleeve 12 on the shaft 3, and is connectible thereto by a clutch 5, preferably of the kind described in Specification 28,663/06 and operated through a yoked lever 17, and links 19, 20. A gear 23, integral with the shell 16 of the clutch 5, meshes with a gear 24 loose on the driven shaft 6. The gear 24 has rigid therewith a drum 25 of another clutch 5<a>, the friction coil 26 of this clutch being enclosed in and carried by a shell or barrel 27 fast on the driven shaft 6, and integrally formed with a gear 35. The driving-shaft has fast thereon the drum 29 of a clutch 5<b>, the drum preferably being rigid with the gear 23. It is surrounded bv a friction coil 30 received within the shell or barrel 31, which is loose on the driving - shaft and has rigid therewith a gear 33 meshing with the gear 35 through an idler 34. The clutch-actuating sleeves 32, 28 are actuated by two yokes 36, 37 slidably mounted on rods 38, 39, Fig. 7. For automatically operating the actuators 36, 37, they are provided respectively with noses 40, 41, Fig. 5, between which is situated a slide 42 provided with two transverse grooves, one containing a clutch-engaging bolt 43 and the other a clutch-disengaging bolt 44. The bolts are equal in length to the width of the slide, so that, if they are moved from their central position, movement of the slide 42 to the right will cause the bolt 44 to disengage one of the clutches, while, during movement in the opposite direction, the bolt 43 engages one of the clutches. The slide 42 is reciprocated from the driving-shaft 3, for which purpose the shaft has a worm 47 meshing with a worm-gear 48 on a vertical shaft 49. This shaft carries a gear 50 which drives through reversing- mechanism a gear 51 fast on a shaft 52 journaled in the frame 46, the shaft 52 having at its lower end a crank-pin 53, which is received in a block 54 slidable in a groove 55 formed in the slide 42, thus giving the lastnamed its reciprocating movement. The transverse bolts 43, 44 are reciprocated by bolt-carriers 56, 57. Each bolt-carrier is formed with ribs 58, which are received in ways in the frame 46 so as to guide the carriers transversely to the slide 42. Each holt-carrier is also provided with an under-rib 59 which is received in a groove 590 in the corresponding bolt. This ribbed connexion permits the bolts to travel with the slide 42 while subjecting their transverse movements to those of the carriers 56, 57. The carriers are operated for shifting the bolts by a rockermember 60 carried by a stud 61 mounted in the frame, the extremities of the rocker arms being received in apertures formed in the bolt-carriers. Each bolt-carrier contains a pair of spring- pressed pins 113, each acted on by a spring 112, thus providing a yielding connexion between the rocker-arm and bolt-carrier. The rocker 60 is oscillated by a time-mechanism, which in turn is operated from the driving-shaft 3. It has rigid therewith an arm 62, which is geared to an arm 63 rigid with a shaft 64 supported in the frame 46. The shaft 64 has fast thereon two arms 65, 66, which are adapted to be actuated by cam-surfaces 67, 68, respectively, on a doubleended spiral cam 69. This cam is mounted on a shaft 70 journaled at its lower end in the frame and at its upper end screwing into a fixed nut 72, so providing for simultaneous longitudinal and rotational movement of the cam 69. The shaft 70 is rotated by means of a non- slidable gear 73 meshing with the gear 51 on the shaft 52. The gear 51 is preferably mutilated so that the gear 73 will make one compiete rotation during each rotation of the gear 51 but will remain at rest during a large part of the time. For reversing the direction of rotation of the shaft 70, the gear 50, connected to the shaft 49, is mounted on a stud 80 which carries at its upper end a gear 81. A second stud 82 has thereon two gears 83, 84, the gear 84 being constantly in mesh with the gear 50, while the gear 83 is situated below the level of the gear 81, Fig. 9. The gear 51 has connected to it a gear 85, the two rotating in unison, but the gear 85 being vertically adjustable relative to the wheel 51, which has pins 87 rising therefrom and receives in an axial bore of the stud 53 the stem 88 of the wheel 85. For shifting the gear 85, mechanism controlled by the cam 69 is employed. The gear 85 has rigid therewith a headed pin 90, which is embraced by the forked end of a lever 91, this lever being pivoted to the frame and having one end formed with gear teeth 93 which mesh with teeth on an elbowlever 94 also pivoted to the frame. One arm of the lever 94 is pivotally connected to a throwmember 96 reciprocating in bearings 97. The throw-member is actuated suddenly by a spring 100 confined between shoulders 101 formed on the throw-member and shoulders 102 on cam members 99 forming part of a sleeve 98 about the member 96. The central part of the sleeve 98 forms a groove receiving the end of a lever 103 rigid on the shaft 64. Two latches 105, 106, pivoted to the bearings 97 and connected by a spring 108, are adapted to engage notches 110, 111 in the member 96 and normally hold the throw-member from movement. When, however, the lever 103 presses the sleeve 98 to right or left, one of the cams 99 lifts the corresponding latch from its notch and the compression of the spring 100 causes the sudden release of the throw-member 98 so shifting the gear 85 and reversing the shaft 70. The arm 66 is adjustably mounted so that reversal may take place after any desired period. It is carried by a sleeve 115 splined to the shaft 64 but movable longitudinally thereon by the engagement of a catch 117 with one of a series of notches 116. Means are provided by which the device may run continuously in one direction by locking the bolt-carriers in their central position, any movement of the rocker-arm 60 in that case only compressing the springs 112 in their sockets. A member 130 slides in the frame and is actuated by a handle 132 projecting through a slot in the casing. The slide has two pins 134, and each bolt-carrier has on its upper surface a groove 135 which receives one of the pins and is provided with flared ends 136 so that movement of the slide 130 to the left either locks the carriers centrally or centralizes them first on account of their engaging the flared mouths 136. In order that the clutch-disengaging carrier 57 and bolt 44 should be released first where the slide 130 is moved to the right, an auxiliary slide 140 is fitted and adapted to be engaged by an arm 146 on the slide 130. The end 141 of the slide 140 is wedge-shaped, and is adapted to engage a V-shaped notch 142 in one of the ribs 58 of the bolt-carrier 57. The slide is recessed to receive the top of the carrier 56, and one of the ribs 58 of the carrier is provided with a notch 143 to receive the portion 144 of the slide. The carrier 56 must remain locked until the movement of the carrier 57 against the bevelled end 141 moves back the portion 144 clear of the notch 143.